<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">

<title>class Enumerator::ArithmeticSequence - RDoc Documentation</title>


<script src="../js/navigation.js" defer></script>
<script src="../js/search.js" defer></script>
<script src="../js/search_index.js" defer></script>
<script src="../js/searcher.js" defer></script>
<script src="../js/darkfish.js" defer></script>

<script src="../js/jquery-3.2.0.min.js"></script>

<script src="../js/vue.min.js"></script>
<script src="../js/js.cookie.min.js"></script>

<link href="../css/fonts.css" rel="stylesheet">
<link id='rdoccss' href="../css/rdoc.css" rel="stylesheet">
<link href="../css/carbon17.css" rel="stylesheet">

<script type="text/javascript">
  var rdoc_rel_prefix = "../";
  var index_rel_prefix = "../";
  var darkModeCsseHref = "../css/rdoc-dm.css"
  var defaultModeCssHref = "../css/rdoc.css"
  // var cssDarkmode = Cookies.get('darkmode');
  
  if( Cookies.get("darkmode") == "true") {
	$('#rdoccss').attr("href", darkModeCsseHref);
}

//  https://cssdeck.com/blog/simple-jquery-stylesheet-switcher/

document.write('<style type="text/css">body{display:none}</style>');

</script>


</head>
<body id="top" role="document" class="class">
  <!-- this is class.html -->

  <div id='actionbar' >
    <div class='wrapper mdiv'>
      <ul class='grids g0'></ul>
    </div> 
    <!-- VERSION HEADER for 3.3.0-preview2 NOT FOUND -->
  </div> <!-- end action bar -->

  <div class='wrapper hdiv'>

    


    <nav id='vapp' role="navigation">
    <div id="project-navigation">
      <div id="home-section" role="region" title="Quick navigation" class="nav-section">
  <h2><a href="../index.html" rel="home">Home</a></h2>

  <div id="table-of-contents-navigation"  >
    <a href="../table_of_contents.html#pages">Pages</a>
    <a href="../table_of_contents.html#classes">Classes</a>
    <a href="../table_of_contents.html#methods">Methods</a>
  </div>
</div>

      <div id="search-section" role="search" class="project-section initially-hidden">
  <form action="#" method="get" accept-charset="utf-8">
    <div id="search-field-wrapper">
      <input id="search-field" role="combobox" aria-label="Search"
             aria-autocomplete="list" aria-controls="search-results"
             type="text" name="search" placeholder="Search" spellcheck="false"
             title="Type to search, Up and Down to navigate, Enter to load">
    </div>

    <ul id="search-results" aria-label="Search Results"
        aria-busy="false" aria-expanded="false"
        aria-atomic="false" class="initially-hidden"></ul>
  </form>
</div>

    </div>


    

    <button id='toggleThing' @click="toggleNav()" >Show/hide navigation</button>
    <div :class="isOpen ? 'block' : 'hidden' " id='toggleMe'>
      <div id="class-metadata">
        
        
<div id="parent-class-section" class="nav-section">
  <h3>Parent</h3>

  <p class="link"><a href="../Enumerator.html">Enumerator</a>
</div>

        
        
        
<!-- Method Quickref -->
<div id="method-list-section" class="nav-section">
  <h3>Methods</h3>

  <ul class="link-list" role="directory">
    <li ><a href="#method-i-3D-3D">#==</a>
    <li ><a href="#method-i-3D-3D-3D">#===</a>
    <li ><a href="#method-i-begin">#begin</a>
    <li ><a href="#method-i-each">#each</a>
    <li ><a href="#method-i-end">#end</a>
    <li ><a href="#method-i-eql-3F">#eql?</a>
    <li ><a href="#method-i-exclude_end-3F">#exclude_end?</a>
    <li ><a href="#method-i-first">#first</a>
    <li ><a href="#method-i-hash">#hash</a>
    <li ><a href="#method-i-inspect">#inspect</a>
    <li ><a href="#method-i-last">#last</a>
    <li ><a href="#method-i-size">#size</a>
    <li ><a href="#method-i-step">#step</a>
  </ul>
</div>

      </div>
     </div>
    </nav>


    <div id='extraz'><div class='adzbox-index'  >
      
     </div>         
    </div>

    <main role="main" aria-labelledby="class-Enumerator::ArithmeticSequence">
    <h1 id="class-Enumerator::ArithmeticSequence" class="class">
      class Enumerator::ArithmeticSequence
    </h1>

    <section class="description">
    
<p><a href="ArithmeticSequence.html"><code>Enumerator::ArithmeticSequence</code></a> is a subclass of <a href="../Enumerator.html"><code>Enumerator</code></a>, that is a representation of sequences of numbers with common difference. Instances of this class can be generated by the <a href="../Range.html#method-i-step"><code>Range#step</code></a> and <a href="../Numeric.html#method-i-step"><code>Numeric#step</code></a> methods.</p>

<p>The class can be used for slicing <a href="../Array.html"><code>Array</code></a> (see <a href="../Array.html#method-i-slice"><code>Array#slice</code></a>) or custom collections.</p>

    </section>

      <section id="5Buntitled-5D" class="documentation-section">





                <section id="public-instance-5Buntitled-5D-method-details" class="method-section">
                <header>
                <h3>Public Instance Methods</h3>
                </header>

                  <div id="method-i-3D-3D" class="method-detail ">
                      <div class="method-heading">
                        <span class="method-callseq">
                          aseq == obj  &rarr; true or false
                              </span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Returns <code>true</code> only if <code>obj</code> is an <a href="ArithmeticSequence.html"><code>Enumerator::ArithmeticSequence</code></a>, has equivalent begin, end, step, and exclude_end? settings.</p>

                              <div class="method-source-code" id="3D-3D-source">
            <pre>static VALUE
arith_seq_eq(VALUE self, VALUE other)
{
    if (!RTEST(rb_obj_is_kind_of(other, rb_cArithSeq))) {
        return Qfalse;
    }

    if (!rb_equal(arith_seq_begin(self), arith_seq_begin(other))) {
        return Qfalse;
    }

    if (!rb_equal(arith_seq_end(self), arith_seq_end(other))) {
        return Qfalse;
    }

    if (!rb_equal(arith_seq_step(self), arith_seq_step(other))) {
        return Qfalse;
    }

    if (arith_seq_exclude_end_p(self) != arith_seq_exclude_end_p(other)) {
        return Qfalse;
    }

    return Qtrue;
}</pre>
                              </div>
                            </div>

                            <div class="aliases">
                              Also aliased as: <a href="ArithmeticSequence.html#method-i-3D-3D-3D">===</a>, <a href="ArithmeticSequence.html#method-i-eql-3F">eql?</a>
                            </div>

                          </div>

                  <div id="method-i-3D-3D-3D" class="method-detail method-alias">
                            <div class="method-heading">
                              <span class="method-name">===</span><span
                                class="method-args">(p1)</span>
                            </div>

                            <div class="method-description">
                              <p>Returns <code>true</code> only if <code>obj</code> is an <a href="ArithmeticSequence.html"><code>Enumerator::ArithmeticSequence</code></a>, has equivalent begin, end, step, and exclude_end? settings.</p>

                            </div>


                            <div class="aliases">
                              Alias for: <a href="ArithmeticSequence.html#method-i-3D-3D">==</a>
                            </div>
                          </div>

                  <div id="method-i-begin" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">begin</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="begin-source">
            <pre>inline VALUE
arith_seq_begin(VALUE self)
{
    return rb_ivar_get(self, id_begin);
}</pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-each" class="method-detail ">
                      <div class="method-heading">
                        <span class="method-callseq">
                          each {|i| block } &rarr; aseq
                              </span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>
                      <div class="method-heading">
                        <span class="method-callseq">
                          each              &rarr; aseq
                              </span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="each-source">
            <pre>static VALUE
arith_seq_each(VALUE self)
{
    VALUE c, e, s, len_1, last;
    int x;

    if (!rb_block_given_p()) return self;

    c = arith_seq_begin(self);
    e = arith_seq_end(self);
    s = arith_seq_step(self);
    x = arith_seq_exclude_end_p(self);

    if (!RB_TYPE_P(s, T_COMPLEX) &amp;&amp; ruby_float_step(c, e, s, x, TRUE)) {
        return self;
    }

    if (NIL_P(e)) {
        while (1) {
            rb_yield(c);
            c = rb_int_plus(c, s);
        }

        return self;
    }

    if (rb_equal(s, INT2FIX(0))) {
        while (1) {
            rb_yield(c);
        }

        return self;
    }

    len_1 = num_idiv(num_minus(e, c), s);
    last = num_plus(c, num_mul(s, len_1));
    if (x &amp;&amp; rb_equal(last, e)) {
        last = num_minus(last, s);
    }

    if (rb_num_negative_int_p(s)) {
        while (NUM_GE(c, last)) {
            rb_yield(c);
            c = num_plus(c, s);
        }
    }
    else {
        while (NUM_GE(last, c)) {
            rb_yield(c);
            c = num_plus(c, s);
        }
    }

    return self;
}</pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-end" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">end</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="end-source">
            <pre>inline VALUE
arith_seq_end(VALUE self)
{
    return rb_ivar_get(self, id_end);
}</pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-eql-3F" class="method-detail method-alias">
                            <div class="method-heading">
                              <span class="method-name">eql?</span><span
                                class="method-args">(p1)</span>
                            </div>

                            <div class="method-description">
                              <p>Returns <code>true</code> only if <code>obj</code> is an <a href="ArithmeticSequence.html"><code>Enumerator::ArithmeticSequence</code></a>, has equivalent begin, end, step, and exclude_end? settings.</p>

                            </div>


                            <div class="aliases">
                              Alias for: <a href="ArithmeticSequence.html#method-i-3D-3D">==</a>
                            </div>
                          </div>

                  <div id="method-i-exclude_end-3F" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">exclude_end?</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="exclude_end-3F-source">
            <pre>inline VALUE
arith_seq_exclude_end(VALUE self)
{
    return rb_ivar_get(self, id_exclude_end);
}</pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-first" class="method-detail ">
                      <div class="method-heading">
                        <span class="method-callseq">
                          first &rarr; num or nil
                              </span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>
                      <div class="method-heading">
                        <span class="method-callseq">
                          first(n) &rarr; an_array
                              </span>
                            </div>

                            <div class="method-description">
                              <p>Returns the first number in this arithmetic sequence, or an array of the first <code>n</code> elements.</p>

                              <div class="method-source-code" id="first-source">
            <pre>static VALUE
arith_seq_first(int argc, VALUE *argv, VALUE self)
{
    VALUE b, e, s, ary;
    long n;
    int x;

    rb_check_arity(argc, 0, 1);

    b = arith_seq_begin(self);
    e = arith_seq_end(self);
    s = arith_seq_step(self);
    if (argc == 0) {
        if (NIL_P(b)) {
            return Qnil;
        }
        if (!NIL_P(e)) {
            VALUE zero = INT2FIX(0);
            int r = rb_cmpint(rb_num_coerce_cmp(s, zero, idCmp), s, zero);
            if (r &gt; 0 &amp;&amp; RTEST(rb_funcall(b, &#39;&gt;&#39;, 1, e))) {
                return Qnil;
            }
            if (r &lt; 0 &amp;&amp; RTEST(rb_funcall(b, &#39;&lt;&#39;, 1, e))) {
                return Qnil;
            }
        }
        return b;
    }

    // TODO: the following code should be extracted as arith_seq_take

    n = NUM2LONG(argv[0]);
    if (n &lt; 0) {
        rb_raise(rb_eArgError, &quot;attempt to take negative size&quot;);
    }
    if (n == 0) {
        return rb_ary_new_capa(0);
    }

    x = arith_seq_exclude_end_p(self);

    if (FIXNUM_P(b) &amp;&amp; NIL_P(e) &amp;&amp; FIXNUM_P(s)) {
        long i = FIX2LONG(b), unit = FIX2LONG(s);
        ary = rb_ary_new_capa(n);
        while (n &gt; 0 &amp;&amp; FIXABLE(i)) {
            rb_ary_push(ary, LONG2FIX(i));
            i += unit;  // FIXABLE + FIXABLE never overflow;
            --n;
        }
        if (n &gt; 0) {
            b = LONG2NUM(i);
            while (n &gt; 0) {
                rb_ary_push(ary, b);
                b = rb_big_plus(b, s);
                --n;
            }
        }
        return ary;
    }
    else if (FIXNUM_P(b) &amp;&amp; FIXNUM_P(e) &amp;&amp; FIXNUM_P(s)) {
        long i = FIX2LONG(b);
        long end = FIX2LONG(e);
        long unit = FIX2LONG(s);
        long len;

        if (unit &gt;= 0) {
            if (!x) end += 1;

            len = end - i;
            if (len &lt; 0) len = 0;
            ary = rb_ary_new_capa((n &lt; len) ? n : len);
            while (n &gt; 0 &amp;&amp; i &lt; end) {
                rb_ary_push(ary, LONG2FIX(i));
                if (i + unit &lt; i) break;
                i += unit;
                --n;
            }
        }
        else {
            if (!x) end -= 1;

            len = i - end;
            if (len &lt; 0) len = 0;
            ary = rb_ary_new_capa((n &lt; len) ? n : len);
            while (n &gt; 0 &amp;&amp; i &gt; end) {
                rb_ary_push(ary, LONG2FIX(i));
                if (i + unit &gt; i) break;
                i += unit;
                --n;
            }
        }
        return ary;
    }
    else if (RB_FLOAT_TYPE_P(b) || RB_FLOAT_TYPE_P(e) || RB_FLOAT_TYPE_P(s)) {
        /* generate values like ruby_float_step */

        double unit = NUM2DBL(s);
        double beg = NUM2DBL(b);
        double end = NIL_P(e) ? (unit &lt; 0 ? -1 : 1)*HUGE_VAL : NUM2DBL(e);
        double len = ruby_float_step_size(beg, end, unit, x);
        long i;

        if (n &gt; len)
            n = (long)len;

        if (isinf(unit)) {
            if (len &gt; 0) {
                ary = rb_ary_new_capa(1);
                rb_ary_push(ary, DBL2NUM(beg));
            }
            else {
                ary = rb_ary_new_capa(0);
            }
        }
        else if (unit == 0) {
            VALUE val = DBL2NUM(beg);
            ary = rb_ary_new_capa(n);
            for (i = 0; i &lt; len; ++i) {
                rb_ary_push(ary, val);
            }
        }
        else {
            ary = rb_ary_new_capa(n);
            for (i = 0; i &lt; n; ++i) {
                double d = i*unit+beg;
                if (unit &gt;= 0 ? end &lt; d : d &lt; end) d = end;
                rb_ary_push(ary, DBL2NUM(d));
            }
        }

        return ary;
    }

    return rb_call_super(argc, argv);
}</pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-hash" class="method-detail ">
                      <div class="method-heading">
                        <span class="method-callseq">
                          hash  &rarr; integer
                              </span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Compute a hash-value for this arithmetic sequence. Two arithmetic sequences with same begin, end, step, and exclude_end? values will generate the same hash-value.</p>

<p>See also <a href="../Object.html#method-i-hash"><code>Object#hash</code></a>.</p>

                              <div class="method-source-code" id="hash-source">
            <pre>static VALUE
arith_seq_hash(VALUE self)
{
    st_index_t hash;
    VALUE v;

    hash = rb_hash_start(arith_seq_exclude_end_p(self));
    v = rb_hash(arith_seq_begin(self));
    hash = rb_hash_uint(hash, NUM2LONG(v));
    v = rb_hash(arith_seq_end(self));
    hash = rb_hash_uint(hash, NUM2LONG(v));
    v = rb_hash(arith_seq_step(self));
    hash = rb_hash_uint(hash, NUM2LONG(v));
    hash = rb_hash_end(hash);

    return ST2FIX(hash);
}</pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-inspect" class="method-detail ">
                      <div class="method-heading">
                        <span class="method-callseq">
                          inspect &rarr; string
                              </span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Convert this arithmetic sequence to a printable form.</p>

                              <div class="method-source-code" id="inspect-source">
            <pre>static VALUE
arith_seq_inspect(VALUE self)
{
    struct enumerator *e;
    VALUE eobj, str, eargs;
    int range_p;

    TypedData_Get_Struct(self, struct enumerator, &amp;enumerator_data_type, e);

    eobj = rb_attr_get(self, id_receiver);
    if (NIL_P(eobj)) {
        eobj = e-&gt;obj;
    }

    range_p = RTEST(rb_obj_is_kind_of(eobj, rb_cRange));
    str = rb_sprintf(&quot;(%s%&quot;PRIsVALUE&quot;%s.&quot;, range_p ? &quot;(&quot; : &quot;&quot;, eobj, range_p ? &quot;)&quot; : &quot;&quot;);

    rb_str_buf_append(str, rb_id2str(e-&gt;meth));

    eargs = rb_attr_get(eobj, id_arguments);
    if (NIL_P(eargs)) {
        eargs = e-&gt;args;
    }
    if (eargs != Qfalse) {
        long argc = RARRAY_LEN(eargs);
        const VALUE *argv = RARRAY_CONST_PTR(eargs); /* WB: no new reference */

        if (argc &gt; 0) {
            VALUE kwds = Qnil;

            rb_str_buf_cat2(str, &quot;(&quot;);

            if (RB_TYPE_P(argv[argc-1], T_HASH)) {
                int all_key = TRUE;
                rb_hash_foreach(argv[argc-1], key_symbol_p, (VALUE)&amp;all_key);
                if (all_key) kwds = argv[--argc];
            }

            while (argc--) {
                VALUE arg = *argv++;

                rb_str_append(str, rb_inspect(arg));
                rb_str_buf_cat2(str, &quot;, &quot;);
            }
            if (!NIL_P(kwds)) {
                rb_hash_foreach(kwds, kwd_append, str);
            }
            rb_str_set_len(str, RSTRING_LEN(str)-2); /* drop the last &quot;, &quot; */
            rb_str_buf_cat2(str, &quot;)&quot;);
        }
    }

    rb_str_buf_cat2(str, &quot;)&quot;);

    return str;
}</pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-last" class="method-detail ">
                      <div class="method-heading">
                        <span class="method-callseq">
                          last    &rarr; num or nil
                              </span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>
                      <div class="method-heading">
                        <span class="method-callseq">
                          last(n) &rarr; an_array
                              </span>
                            </div>

                            <div class="method-description">
                              <p>Returns the last number in this arithmetic sequence, or an array of the last <code>n</code> elements.</p>

                              <div class="method-source-code" id="last-source">
            <pre>static VALUE
arith_seq_last(int argc, VALUE *argv, VALUE self)
{
    VALUE b, e, s, len_1, len, last, nv, ary;
    int last_is_adjusted;
    long n;

    e = arith_seq_end(self);
    if (NIL_P(e)) {
        rb_raise(rb_eRangeError,
                 &quot;cannot get the last element of endless arithmetic sequence&quot;);
    }

    b = arith_seq_begin(self);
    s = arith_seq_step(self);

    len_1 = num_idiv(num_minus(e, b), s);
    if (rb_num_negative_int_p(len_1)) {
        if (argc == 0) {
            return Qnil;
        }
        return rb_ary_new_capa(0);
    }

    last = num_plus(b, num_mul(s, len_1));
    if ((last_is_adjusted = arith_seq_exclude_end_p(self) &amp;&amp; rb_equal(last, e))) {
        last = num_minus(last, s);
    }

    if (argc == 0) {
        return last;
    }

    if (last_is_adjusted) {
        len = len_1;
    }
    else {
        len = rb_int_plus(len_1, INT2FIX(1));
    }

    rb_scan_args(argc, argv, &quot;1&quot;, &amp;nv);
    if (!RB_INTEGER_TYPE_P(nv)) {
        nv = rb_to_int(nv);
    }
    if (RTEST(rb_int_gt(nv, len))) {
        nv = len;
    }
    n = NUM2LONG(nv);
    if (n &lt; 0) {
        rb_raise(rb_eArgError, &quot;negative array size&quot;);
    }

    ary = rb_ary_new_capa(n);
    b = rb_int_minus(last, rb_int_mul(s, nv));
    while (n) {
        b = rb_int_plus(b, s);
        rb_ary_push(ary, b);
        --n;
    }

    return ary;
}</pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-size" class="method-detail ">
                      <div class="method-heading">
                        <span class="method-callseq">
                          size &rarr; num or nil
                              </span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              <p>Returns the number of elements in this arithmetic sequence if it is a finite sequence.  Otherwise, returns <code>nil</code>.</p>

                              <div class="method-source-code" id="size-source">
            <pre>static VALUE
arith_seq_size(VALUE self)
{
    VALUE b, e, s, len_1, len, last;
    int x;

    b = arith_seq_begin(self);
    e = arith_seq_end(self);
    s = arith_seq_step(self);
    x = arith_seq_exclude_end_p(self);

    if (RB_FLOAT_TYPE_P(b) || RB_FLOAT_TYPE_P(e) || RB_FLOAT_TYPE_P(s)) {
        double ee, n;

        if (NIL_P(e)) {
            if (rb_num_negative_int_p(s)) {
                ee = -HUGE_VAL;
            }
            else {
                ee = HUGE_VAL;
            }
        }
        else {
            ee = NUM2DBL(e);
        }

        n = ruby_float_step_size(NUM2DBL(b), ee, NUM2DBL(s), x);
        if (isinf(n)) return DBL2NUM(n);
        if (POSFIXABLE(n)) return LONG2FIX((long)n);
        return rb_dbl2big(n);
    }

    if (NIL_P(e)) {
        return DBL2NUM(HUGE_VAL);
    }

    if (!rb_obj_is_kind_of(s, rb_cNumeric)) {
        s = rb_to_int(s);
    }

    if (rb_equal(s, INT2FIX(0))) {
        return DBL2NUM(HUGE_VAL);
    }

    len_1 = rb_int_idiv(rb_int_minus(e, b), s);
    if (rb_num_negative_int_p(len_1)) {
        return INT2FIX(0);
    }

    last = rb_int_plus(b, rb_int_mul(s, len_1));
    if (x &amp;&amp; rb_equal(last, e)) {
        len = len_1;
    }
    else {
        len = rb_int_plus(len_1, INT2FIX(1));
    }

    return len;
}</pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-step" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">step</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="step-source">
            <pre>inline VALUE
arith_seq_step(VALUE self)
{
    return rb_ivar_get(self, id_step);
}</pre>
                              </div>
                            </div>


                          </div>

                          </section>

              </section>
              </main>



            </div>  <!--  class='wrapper hdiv' -->


<footer id="validator-badges" role="contentinfo">
<p><a href="https://validator.w3.org/check/referer">Validate</a></p>
<p>Generated by <a href="https://ruby.github.io/rdoc/">RDoc</a> 6.4.0.</p>
<p>Based on <a href="https://github.com/ged/darkfish/">Darkfish</a> by <a href="http://deveiate.org">Michael Granger</a>.</p>

  
    <p><p><a href="https://ruby-doc.org">Ruby-doc.org</a> is a service of <a href="https://jamesbritt.com">James Britt</a> and <a href="https://neurogami.com">Neurogami</a>, purveyors of fine <a href='https://jamesbritt.bandcamp.com/'>dance noise</a></p>
</p>
  
  </footer>

<script type="text/javascript">


  let ads  = $("#carbonads-container").children().detach();


  function swapMode() {
    var cookieName = 'darkmode';
    var cssDarkmode = Cookies.get(cookieName);
    console.log("***** swapMode! " + cssDarkmode + " *****");


    if (cssDarkmode == "true") {
      console.log("We have dark mode, set the css to light ...");
      $('#rdoccss').attr("href", defaultModeCssHref);
      $('#cssSelect').text("Dark mode");
      cssDarkmode = "false";
      console.log("swapMode! Now set cookie to " + cssDarkmode);
      Cookies.set(cookieName, cssDarkmode);

    } else {
      console.log("We not have dark mode, set the css to dark ...");
      $('#rdoccss').attr("href", darkModeCsseHref);
      $('#cssSelect').text("Light mode");
      cssDarkmode = "true";
      console.log("swapMode! Now set cookie to " + cssDarkmode);
      Cookies.set(cookieName, cssDarkmode);

    }

    console.log("  --------------- ");
  }


const vueCssApp = new Vue({
el: '#menubar',
data: {
isDark: false
},
methods: {
toggleClass: function(event){
this.isDark = !this.isDark;
}
}
})

const vueApp = new Vue({
el: '#vapp',
data: { 
isOpen: true
},

mounted() {
this.handleResize();
this.manage_mob_classes();
window.addEventListener('resize', this.handleResize)
//this.isOpen !=  (/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent));
},
destroyed() {
window.removeEventListener('resize', this.handleResize)
},
created() {
//manage_mob_classes();
},

methods : {
isMobile() {
  return (/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent));
},

  handleResize() {
    if (!this.isMobile()) {
      this.isOpen = window.innerWidth > 800;
    }
  },

  manage_mob_classes() {
    if (/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent)) {
      $("nav").addClass("mob_nav");
      $("main").addClass("mob_main");
      $("#extraz").addClass("mob_extraz");
      $("#carbonads-container").addClass("mob_carbonads-container");
      this.isOpen  = false;
    } else {
      $("nav").removeClass("mob_nav") 
        $("main").removeClass("mob_main");
      $("#extraz").removeClass("mob_extraz");
      $("#carbonads-container").removeClass("mob_carbonads-container");
      this.isOpen  = true;
    }
  },

  toggleNav() {
    this.isOpen =! this.isOpen ;
    // alert("Toggle nav!");
    console.log("toggleNav() click: " + this.isOpen );
  }
}
})

$("#carbonads-container").append(ads);


$(function() {

    var darkmode = Cookies.get("darkmode");
    console.log("Document ready: " + darkmode);

    if ( darkmode  == "true" ) {
      $('#cssSelect').text("Light mode");
    } else {
      $('#cssSelect').text("Dark mode");
     }

    $('body').css('display','block');
    });

</script>

    
  </body> 
</html>

